Skin reaction not around mouth?

[MoonUnitAlpha]

Do allergic reactions only occur where contact with the food has occured?

My ds has developed a rash on the sides of his head three times now, but no food has touched that area. Could it be an allergy?

Yes, it could be an allergy.
It is possible for rashes and other reactions to come out anywhere on the body.

Mine used to get hives on his hands/ fingers so could be a food allergy.

No idea what it is he's reacting to! So far it's happened when he's had yoghurt with stewed pear, and yoghurt with some Ella's kitchen apple and banana puree - so presumed it was the yoghurt. Today though he reacted to the apple and banana puree on it's own

Has also had the same reaction to Heinz baby porridge which does contain milk, but has no reaction to formula milk.

It doesn't seem to cause him any discomfort, the sides of his head just come up in this rash within minutes of eating something - and it disappears within 15 minutes after.

You might want to take him to a specialist for allergy testing.
They can tell how severe an allergy is as well as the cause. It might help to know for sure.

He does already have eczema, I think that can be linked to food intolerances can't it?